<template>
  <div class="layout">
    <Layout style="height: 100vh;">
      <Sider ref="side" hide-trigger collapsible :collapsed-width="78" v-model="isCollapsed">
        <Menu :active-name="activeName" theme="dark" width="auto" :class="menuitemClasses" @on-select="handleSelect">
          <MenuItem name="navigate">
            <Icon type="ios-navigate"></Icon>
            <span>Navigate</span>
          </MenuItem>
          <MenuItem name="index">
            <Icon type="ios-search"></Icon>
            <span>Product</span>
          </MenuItem>
          <MenuItem name="about">
            <Icon type="ios-settings"></Icon>
            <span>About</span>
          </MenuItem>
        </Menu>
      </Sider>
      <Layout class="layout-content">
        <Header :style="{ padding: 0 }" class="layout-header-bar">
          <Icon @click.native="collapsedSider" :class="rotateIcon" :style="{ margin: '0 20px' }" type="md-menu" size="24"></Icon>
          <a href="javascript:;" v-if="username" :style="{ marginRight: '20px' }">{{ username }}</a>
          <router-link v-else :to="{ name: 'login' }" :style="{ marginRight: '20px' }">Login</router-link>
        </Header>
        <Content :style="{ margin: '20px', background: '#fff', minHeight: '260px' }">
          <div class="main">
            <router-view />
          </div>
        </Content>
      </Layout>
    </Layout>
  </div>
</template>

<script>
export default {
  name: 'Main',
  data() {
    return {
      isCollapsed: false,
      activeName: 'index'
    }
  },
  computed: {
    rotateIcon() {
      return ['menu-icon', this.isCollapsed ? 'rotate-icon' : '']
    },
    menuitemClasses() {
      return ['menu-item', this.isCollapsed ? 'collapsed-menu' : '']
    },
    username() {
      return this.$store.state.user.username
    }
  },
  methods: {
    collapsedSider() {
      this.$refs.side.toggleCollapse()
    },
    handleSelect(name) {
      // console.log(name)
      this.activeName = name
      this.$router.push({
        name
      })
    }
  }
}
</script>

<style lang="less" scoped>
.layout {
  border: 1px solid #d7dde4;
  background: #f5f7f9;
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  .layout-content {
    height: 100%;
    overflow: hidden;
  }
}
.layout-header-bar {
  background: #fff;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.layout-logo-left {
  width: 90%;
  height: 30px;
  background: #5b6270;
  border-radius: 3px;
  margin: 15px auto;
}
.menu-icon {
  transition: all 0.3s;
}
.rotate-icon {
  transform: rotate(-90deg);
}
.menu-item span {
  display: inline-block;
  overflow: hidden;
  width: 69px;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: bottom;
  transition: width 0.2s ease 0.2s;
}
.menu-item i {
  transform: translateX(0px);
  transition: font-size 0.2s ease, transform 0.2s ease;
  vertical-align: middle;
  font-size: 16px;
}
.collapsed-menu span {
  width: 0px;
  transition: width 0.2s ease;
}
.collapsed-menu i {
  transform: translateX(5px);
  transition: font-size 0.2s ease 0.2s, transform 0.2s ease 0.2s;
  vertical-align: middle;
  font-size: 22px;
}

.main {
  padding: 30px;
}
</style>
